Bile acid is formed by cholesterol, so it is necessary to control the cholesterol intake to control the concentration of bile acid. Generally speaking, the following diets can make bile acids lower quickly: 1, corn, corn is rich in calcium, phosphorus, selenium and lecithin, which has the effect of lowering serum cholesterol. 2, kelp, kelp can lower cholesterol in blood and bile. 3, shiitake mushrooms, shiitake mushrooms contain adenine derivatives, which have the effect of lowering serum cholesterol and can effectively prevent atherosclerosis and brittle blood vessels, as well as lower blood pressure. 4, soybeans, soybeans and their soybean products are rich in unsaturated fatty acids, vitamin E and phospholipids, all three of which can effectively reduce blood cholesterol.